摘要
半导体制冷器是一种高热流密度器件，在其制冷循环过程中，有珀尔帖(Peltier)、傅立叶(Fourier)和焦耳(Joule)三种热效应在共同起作用，其中珀尔帖热效应是半导体制冷的基础。由于半导体材料的塞贝克(Seeback)系数?有正负之分，而且其数值通常有所差异，因此P、N型电偶对的微观传热机理是不同的。本文着重讨论了在稳定工作状态下半导体制冷器温度场的数学模型，并对该模型进行了求解，通过数值计算得到了半导体制冷器沿电偶臂长度方向的温度分布曲线，这对进一步弄清半导体制冷器的传热机理有重要意义。
Thermoelectric modules are high heat-flow devices. Three caloric effects, i.e. the Peltier, Fourier and Joule effects, play a part in the process of refrigeration cycle, in which the Peltier effect is the most important one. Because the Seeback coefficient ? may be a positive or a negative number and have different values depending on the type of semiconductor materials, the heat transfer mechanisms in P and N types of thermocouples are different. This paper presented a mathematical model describing the temperature field in a semiconductor refrigeration device under steady working conditions. A numerical study on the temperature profile in a semiconductor refrigeration device was carried out using this model, and the temperature distribution along the thermocouple of the device was obtained, which is of importance to further investigations on the heat transfer mechanisms.
出处
《能源研究与信息》
2001年第1期18-21,共4页
Energy Research and Information
关键词
半导体制冷器
温度场
数值分析
semiconductor refrigeration
temperature field
numerical study
